<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    <div id="app">
        <button @click="add">添加学生</button>
        <button @click="del">删除学生</button>
        <table border="1" width="50%" style="border-collapse: collapse">
        <tr>
            <th>班级</th>
            <th>姓名</th>
            <th>性别</th>
            <th>年龄</th>    
        </tr>
        <tr align="center" v-for="item in students">
            <td>{{item.grade}}</td>
            <td>{{item.name}}</td>
            <td>{{item.gender}}</td>
            <td>{{item.age}}</td>
        </tr>
        </table>
    </div>

    <script>
        var vm = new Vue({
            el:'#app',
            data:{
                students:[]
            },
            methods:{
                // 添加学生信息
                add () {
                    var student = {grade:'1', name:'张三', gender:'男', age:25}
                    this.students.push(student)
                },
                // 删除学生信息
                del () {
                    this.students.pop()
                }
            }
        })
    </script>
</body>
</html>